RETNO ERMAWATI, RETNO ERMAWATI. PENINGKATKAN MOTIVASI, KEMANDIRIAN, DAN HASIL BELAJAR EKONOMI MELALUI METODE PEMBELAJARAN PROBLEM BASED LEARNING. Jurnal Sosialita, [S. l.], v. 14, n. 2, 2022. Disponível em: https://journal.upy.ac.id/index.php/sosialita/article/view/2350. Acesso em: 6 apr. 2025.